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Finding the Fourth Proportional to 201,400.72, 302,133.72 and 66,424.48

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Solution

The fourth proportional to 201,400.72, 302,133.72 and 66,424.48 is: 99,647.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,400.72 : 302,133.72 = 66,424.48 : x
  2. Step 2: Convert to fraction form
    201,400.72/302,133.72 = 66,424.48/x
  3. Step 3: Cross multiply
    201,400.72x = 302,133.72 × 66,424.48
  4. Step 4: Simplify right side
    201,400.72x = 20,069,075,241.47
  5. Step 5: Solve for x
    x = 20,069,075,241.47/201,400.72
  6. Step 6: Final answer
    x = 99,647.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.